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Abstract
A model is proposed for directly determining the volume of lattice vacancies by means of dilatometric measurements of the anisotropic irreversible length change which occurs during annealing of lattice vacancies at grain boundaries of shape-anisotropic crystallites. The model is tested using nanocrystalline Ni after the high-pressure torsion deformation which exhibits excess concentration of lattice vacancies and elongated crystallite shape. Different length changes upon annealing parallel and perpendicular to the elongation axis occur from which a vacancy volume can be derived.
This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.
This work was financially supported by the Austrian Science Fund (FWF): P25628-N20.
Originalsprache | englisch |
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Aufsatznummer | 021906 |
Seitenumfang | 4 |
Fachzeitschrift | Applied Physics Letters |
Jahrgang | 109 |
Ausgabenummer | 2 |
DOIs | |
Publikationsstatus | Veröffentlicht - 2016 |
Fields of Expertise
- Advanced Materials Science
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Defekte und Umwandlungen von Materialien
Klinser, G., Sprengel, W. & Würschum, R.
1/01/13 → …
Projekt: Arbeitsgebiet
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FWF- Defekte und strukturelle Anisotropie in ultrafeinkristallinen Metallen
Kotzurek, J., Sprengel, W. & Würschum, R.
1/05/13 → 30/04/17
Projekt: Forschungsprojekt